Class UniqueIpFilter

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.ipfilter.AbstractRemoteAddressFilter<InetSocketAddress>

io.netty.handler.ipfilter.UniqueIpFilter

All Implemented Interfaces:

ChannelHandler, ChannelInboundHandler

@Sharable
public class UniqueIpFilter
extends AbstractRemoteAddressFilter<InetSocketAddress>

This class allows one to ensure that at all times for every IP address there is at most one Channel connected to the server.

Nested Class Summary

Nested classes/interfaces inherited from interface ChannelHandler

ChannelHandler.Sharable

Modifier and Type	Interface	Description
static @interface	ChannelHandler.Sharable	Indicates that the same instance of the annotated ChannelHandler can be added to one or more ChannelPipelines multiple times without a race condition.

Constructor Summary

Constructors

Constructor	Description
UniqueIpFilter()

Method Summary

Modifier and Type	Method	Description
protected boolean	accept(ChannelHandlerContext ctx, InetSocketAddress remoteAddress)	This method is called immediately after a Channel gets registered.

Methods inherited from class AbstractRemoteAddressFilter

channelAccepted, channelActive, channelRegistered, channelRejected

Modifier and Type	Method	Description
protected void	channelAccepted(ChannelHandlerContext ctx, InetSocketAddress remoteAddress)	This method is called if remoteAddress gets accepted by AbstractRemoteAddressFilter.accept(ChannelHandlerContext, SocketAddress).
void	channelActive(ChannelHandlerContext ctx)	Calls ChannelHandlerContext.fireChannelActive() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelRegistered(ChannelHandlerContext ctx)	Calls ChannelHandlerContext.fireChannelRegistered() to forward to the next ChannelInboundHandler in the ChannelPipeline.
protected ChannelFuture	channelRejected(ChannelHandlerContext ctx, InetSocketAddress remoteAddress)	This method is called if remoteAddress gets rejected by AbstractRemoteAddressFilter.accept(ChannelHandlerContext, SocketAddress).

Methods inherited from class ChannelInboundHandlerAdapter

channelInactive, channelRead, channelReadComplete, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Modifier and Type	Method	Description
void	channelInactive(ChannelHandlerContext ctx)	Calls ChannelHandlerContext.fireChannelInactive() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelRead(ChannelHandlerContext ctx, Object msg)	Calls ChannelHandlerContext.fireChannelRead(Object) to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelReadComplete(ChannelHandlerContext ctx)	Calls ChannelHandlerContext.fireChannelReadComplete() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelUnregistered(ChannelHandlerContext ctx)	Calls ChannelHandlerContext.fireChannelUnregistered() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	channelWritabilityChanged(ChannelHandlerContext ctx)	Calls ChannelHandlerContext.fireChannelWritabilityChanged() to forward to the next ChannelInboundHandler in the ChannelPipeline.
void	exceptionCaught(ChannelHandlerContext ctx, Throwable cause)	Calls ChannelHandlerContext.fireExceptionCaught(Throwable) to forward to the next ChannelHandler in the ChannelPipeline.
void	userEventTriggered(ChannelHandlerContext ctx, Object evt)	Calls ChannelHandlerContext.fireUserEventTriggered(Object) to forward to the next ChannelInboundHandler in the ChannelPipeline.

Methods inherited from class ChannelHandlerAdapter

ensureNotSharable, handlerAdded, handlerRemoved, isSharable

Modifier and Type	Method	Description
protected void	ensureNotSharable()	Throws IllegalStateException if ChannelHandlerAdapter.isSharable() returns true
void	handlerAdded(ChannelHandlerContext ctx)	Do nothing by default, sub-classes may override this method.
void	handlerRemoved(ChannelHandlerContext ctx)	Do nothing by default, sub-classes may override this method.
boolean	isSharable()	Return true if the implementation is ChannelHandler.Sharable and so can be added to different ChannelPipelines.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

UniqueIpFilter

public UniqueIpFilter()

Method Details

accept

protected boolean accept(ChannelHandlerContext ctx,
 InetSocketAddress remoteAddress)
                  throws Exception

Description copied from class: AbstractRemoteAddressFilter

This method is called immediately after a Channel gets registered.

Specified by:

accept in class AbstractRemoteAddressFilter<InetSocketAddress>

Returns:

Return true if connections from this IP address and port should be accepted. False otherwise.

Throws:

Exception